Hi all, I'm really hoping someone will be able to shed some light on this and bring some happiness to my current despair! My network set ip is as follows, TP Link VR600 used as Modem only -> R7000 Tomato Router on different subnet which acts as the DHCP server distributing to all clients on the network, with a couple of access points with ethernet backhaul on the same subnet too. I have managed to get Tomato to connect to the VR600 with IPv6 over RADVD delegated and ULA and RDNSS enabled - however the Tomato router isn't sending out IPv6 addresses to any clients on the network. I have done a ping test through Tomato, all works fine - 0 packet losses. However I'm struggling to get the dnsmasq config correct so that it distributes IPv6 addresses to clients. In the logs, it is showing the following error repeatedly: daemon.warn dnsmasq-dhcp: no address range available for DHCPv6 request via br0 Could anyone shed some light on how this should be done? Happy to provide further info, just hit me with the commands to get what you need. Thanks in advance!